Pro-Ject Audio Systems Pre Box User manual

INSTRUCTIONS FOR USE
Pro-Ject Pre Box

© Audio Trade GmbH · Pro-Ject Pre Box · Revision 15.10.10/15.12.10
2
Dear music lover,
thank you for purchasing a PRO-JECT AUDIO preamplifier.
In order to achieve maximum performance and reliability you should study these instructions for use carefully.
!
Warning of a hazard for the user, the unit or possible misuse.
Important notice.
Connectors
!
Make all connections whilst the preamplifier is disconnected from the power supply.
!
Take care to connect the left and right channels correctly. The right channel is usually marked red,
the left channel black or white.
Pre out
A power amplifier or active loudspeakers can be connected to the output sockets marked Out.
Inputs
Line level sources such as CD player radio or TV can be connected to the input sockets marked In 1 or In 2.
Remote power-on, switching voltage
The socket marked Trigger Amp provides a 12V DC switched output voltage for remote power-on of units with
this facility (such as the Pro-Ject Amp Box or Pro-Ject Amp Box Mono), which corresponds to the position (on/off)
of the power switch on the front panel.
Optional Pro-Ject Switch Box. The Trigger Switch socket connects the input expander Pro-Ject Switch Box.
The Switch Box provides three extra line-level inputs.
A 45cm remote power-on cable (polarity
+
) is supplied with the Pro-Ject amplifiers for connecting the
remote-switched power socket to the Pro-Ject Pre Box. Longer cables are available from your Pro-Ject dealer.
Do not use this trigger output for any other connections for which it is not designed.
Mains power connection
The unit is supplied with a power supply suitable for your country's mains supply. Check the label before
connecting to ensure compliance with the mains rating in your house. Connect the low voltage plug from the
power supply to the Power ~16V socket before connecting the power supply to the mains.

© Audio Trade GmbH · Pro-Ject Pre Box · Revision 15.10.10/15.12.10
3
Remote control
1
ON/OFF
turns the unit on or back into standby.
The blue LED on the front panel shows that the unit is powered on.
0
_
VOL
and
0+
VOL
adjust the sound volume
CH+
CH-
VOL+
VOL-
ON/OFF
0
_
CH
and
0+
CH
select the inputs
Front panel controls
Pre Box
Power
1
Volume
2
Input
Select
Stand-By
The switch marked Power on the front turns the unit on or back into standby. The blue LED on the front panel
shows that the unit is powered on.
Input selector
Pressing the Input Select button selects the In 1 and In 2 inputs in turn. If Input 1is selected, the LED over the
Input Select button lights up green. If Input 2 is selected, it lights up red.
If the optional input expander Pro-Ject Switch Box is connected, Input Select will also select the additional
inputs provided by the Switch Box. For further details please see the user guide of the Pro-Ject Switch Box.
Volume
Adjust the volume to the desired level using the large knob marked Volume on the front panel.

© Audio Trade GmbH · Pro-Ject Pre Box · Revision 15.10.10/15.12.10
4
Replacing batteries
Proceed as follows:
• Unlock and slide open the battery case cover
• Replace the battery.
Make sure the battery is the right way round !
• Close the battery case cover
Battery type: 1 x CR2032 / 3V or 1 x CR2025 / 3V
Do not dispose the batteries as ordinary domestic refuse. Please dispose your exhausted batteries at
the appropriate collection sites - usually located at supermarkets and drugstores.
Technical specifications Pro-Ject Pre Box
Frequency response: 20Hz - 20kHz (±0,2dB)
Noise floor: -100dB (A weighted)
THD: 0,001%
Gain: 8,5dB
Pre out: 1 pair RCA/Phono sockets
Output voltage typically: 1V at 1kHz
Line-level inputs: 2 pairs RCA/Phono sockets
Input impedance: 20kohms
Trigger Amp: 12V DC switching voltage
Trigger Amp: 2-pole 2,5mm co-axial jack
Trigger Switch: 2-pole 2,5mm co-axial jack
Outboard power supply: 16V/500mA AC, suitable for your country's mains supply
Power consumption: 16V/200mA AC
Replacement battery remote control: 1 x CR2032 / 3V or 1 x CR2025 / 3V
Dimensions W x H x D (D with sockets): 103 x 36 x 103 (109)mm
Weight: 630g without power supply
Service
Should you encounter a problem which you are not able to alleviate or identify, please contact your dealer for
further advice. Only when the problem cannot be resolved there should the unit be sent to the responsible
distributor in your country.
Warranty
The manufacturer accepts no responsibility for damage caused by not adhering to these instructions
for use. Modification or change to any part of the product by unauthorized persons release the
manufacturer from any liability over and above the lawful rights of the customer.
PRO-JECT is a Registered Trademark of H. Lichtenegger.
This guide was produced by: Audio Trade GmbH
Copyright © 2007. All rights reserved.
The information was correct at the time of going to
press. The manufacturer reserves the right to make
changes to the technical specification without prior
notice as deemed necessary to uphold the ongoing
process of technical development.